JPS56162572A - Transmission system for facsimile picture signal - Google Patents

Transmission system for facsimile picture signal

Info

Publication number
JPS56162572A
JPS56162572A JP6670180A JP6670180A JPS56162572A JP S56162572 A JPS56162572 A JP S56162572A JP 6670180 A JP6670180 A JP 6670180A JP 6670180 A JP6670180 A JP 6670180A JP S56162572 A JPS56162572 A JP S56162572A
Authority
JP
Japan
Prior art keywords
white
lines
skip
information
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6670180A
Other languages
Japanese (ja)
Inventor
Kyoji Koseki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6670180A priority Critical patent/JPS56162572A/en
Publication of JPS56162572A publication Critical patent/JPS56162572A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/17Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa the scanning speed being dependent on content of picture

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

PURPOSE:To compress transmitted data effectively in case of an original with a large white ground by transmitting information showing whether all lines are white or not in addition to information on a white black skip and then by making a white line skip over lines when the all-white line information is transmitted. CONSTITUTION:Picture signals by lines on an original are set to a change coupled device CCD11 and wirtten in a picture memory 12 at addresses A0-A10 from a counter 13 and they are also sent to a change-over switch 18. The said operations are controlled by a controller 14 using a microprocessor, etc. The picture signal from the CCD11 is branched and applied to an all-line-white detecting circuit 15 and a block-by-block all-white detecting circuit 16 and when the circuit 15 detects the information showing that all lines of a block code are white about two lines, a skip line signal SKIPL is sent to a device 14 to edit the block code, thereby controlling a switch 18. Further, the circuit 16 detects white skip information and applied it to the device 14, which compresses effectively the transmitted data of an original with a large white ground.
JP6670180A 1980-05-20 1980-05-20 Transmission system for facsimile picture signal Pending JPS56162572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6670180A JPS56162572A (en) 1980-05-20 1980-05-20 Transmission system for facsimile picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6670180A JPS56162572A (en) 1980-05-20 1980-05-20 Transmission system for facsimile picture signal

Publications (1)

Publication Number Publication Date
JPS56162572A true JPS56162572A (en) 1981-12-14

Family

ID=13323499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6670180A Pending JPS56162572A (en) 1980-05-20 1980-05-20 Transmission system for facsimile picture signal

Country Status (1)

Country Link
JP (1) JPS56162572A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60109972A (en) * 1983-11-18 1985-06-15 Nec Corp Data compressing and expanding system
JPS60206374A (en) * 1984-03-30 1985-10-17 Fuji Xerox Co Ltd Binary-coding information compressing and encoding system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60109972A (en) * 1983-11-18 1985-06-15 Nec Corp Data compressing and expanding system
JPS60206374A (en) * 1984-03-30 1985-10-17 Fuji Xerox Co Ltd Binary-coding information compressing and encoding system
JPH0528026B2 (en) * 1984-03-30 1993-04-23 Fuji Xerox Co Ltd

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